The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 10, 2023
Filed:
May. 20, 2021
Aragon Photonics Labs S.l.u., Saragossa, ES;
Hugo Fidalgo Martins, Madrid, ES;
Miguel Soriano Amat, Castellón, ES;
María del Rosario Fernández Ruiz, Madrid, ES;
Sonia Martín López, Madrid, ES;
Miguel González Herráez, Madrid, ES;
Javier Preciado Garbayo, Navarra, ES;
Asier Villafranca Velasco, Navarra, ES;
ARAGON PHOTONICS LABS S.L.U., Saragossa, ES;
Abstract
A method and a system for interrogating an optical fiber includes a probe signal that has a first frequency comb at a first repetition rate (Δf) injected into the optical fiber. A backscattering signal that includes the probe signal convolved with an impulse response of the optical fiber in reflection which is sensitive to at least one parameter being measured from the optical fiber is gathered. The backscattering signal is beaten with a local oscillator signal to generate a beating signal, the local oscillator signal including a second frequency comb at a second repetition rate that is offset from the first repetition rate (Δf+δf) and being mutually coherent with the first frequency comb. The resulting beating signal is analysed to thereby determine the at least one parameter being measured from the optical fiber.